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Phys Rev Lett. 2005 Sep 30;95(14):146404. Epub 2005 Sep 30.

Direct observation of the mass renormalization in SrVO3 by angle resolved photoemission spectroscopy.

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  • 1Department of Complexity Science and Engineering, University of Tokyo, Kashiwa, Chiba 277-8561, Japan.


Band dispersions and Fermi surfaces of the three-dimensional Mott-Hubbard system SrVO3 are directly observed by angle-resolved photoemission spectroscopy. An observed spectral weight distribution near the Fermi level (E(F)) shows cylindrical Fermi surfaces as predicted by band-structure calculations. By comparing the experimental results with calculated surface electronic structures, we conclude that the obtained band dispersion reflects the bulk electronic structure. The enhanced effective electron mass obtained from the energy band near E(F) is consistent with the bulk thermodynamic properties and hence with the normal Fermi-liquid behavior of SrVO3.

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